Simpel PSU for relay inside G1176

[Soeren_DK]

I wanna use a relay to switch between stereo/mono mode because I only got a 1-pol switch in the frontpanal

I have a 12VDC relay in my desk but I only got 30VDC available inside the G1176. Can I bring the 30VDC to 12VDC with a 7812 or should I make a complete little psu for this little thing using the AC from the toroid and make something like volker did in the DOAC?

Cheers
Søren

 

[joshco]

the 7812 can take 35V the LM317 up to 40V, i would go for the LM317. But its a lot of "wood" for the regulators to step up more than 10V, they will become very hot. A large Heatsink might help.

 

[Rochey]

I strongly recommend a separate supply for any digital/switching rails.

For the digital boards that I'll be using (the expat audio ones) - we'll be suggesting additional 12V supplies be intergrated into the rack case, with their inputs tied to the primaries of the inpur transformer.

That way, it should at least behave like a completely separate supply, and not interfere with the analog.

 

[gemini86]

Will you be switching live? Probably not. I'd just use the -10v rail, should be enough to activate the relay? Am I wrong?

 

[sahib]

Make a seperate psu and tap it to AC.

 

[Soeren_DK]

Thanks for the reply.
I will make a little psu for this thing..  I shot a pic when I'm done...

Cheers
Søren

 

[dustbro]

can someone suggest the proper way to hook up a transformer to this circut?

I'm using an antek AN-0222 and keep frying D15 and D17
http://www.antekinc.com/pdf/AN-0222.pdf

thanks!

 

[gemini86]

this question would more likely be answered in the "all things g1176" thread in the lab.